Perenial: Evergreen arching yellow foliage in spring turning chartreuse in color the rest of the year. Clumping growth habit. Good in rock gardens, edgings, borders & dry shade. Tolerates heat, deer, humidity & drought. Flower spikes resemble grape hyacinth. Blooms: summer-fall. Color: purple-lavender. Size: 12" x 24". Exposure: shade/part shade. Water: moist to dry. USDA Z5-10.